Home / 28,237.72-38,975.70-17,621.08

Finding the Fourth Proportional to 28,237.72, 38,975.70 and 17,621.08

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Solution

The fourth proportional to 28,237.72, 38,975.70 and 17,621.08 is: 24,321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,237.72 : 38,975.70 = 17,621.08 : x
  2. Step 2: Convert to fraction form
    28,237.72/38,975.70 = 17,621.08/x
  3. Step 3: Cross multiply
    28,237.72x = 38,975.70 × 17,621.08
  4. Step 4: Simplify right side
    28,237.72x = 686,793,927.76
  5. Step 5: Solve for x
    x = 686,793,927.76/28,237.72
  6. Step 6: Final answer
    x = 24,321.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.